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| Preparation of high performance spherical titanium alloy powder for 3D printing by inert gas induction melting |
| FAN Ya-zhuo, XIE Bo, MIAO Qing-dong, ZHAO San-chao |
| State Key Laboratory of Vanadium and Titanium Comprehensive Utilization, Pangang Group Research Institute Co., Ltd., Panzhihua 617000, China |
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Abstract Spherical titanium alloy powder for high performance ultra-fine low oxygen 3D printing was prepared by electrode induction melting gas atomization. The effect of atomization angle on primary powder formation rate and the relationship between powder particle size and primary oxygen enrichment rate were studied. The results show that atomization angles have a great influence on the primary powder forming rate, too large or too small atomization angle is not conducive to the improvement of the primary powder forming rate. Only when the atomization angle is about 33 degrees, the primary powder forming rate is the best (about 80%), and the titanium alloy powder obtained under this condition has good sphericity and less associated phases. When the particle size of spherical titanium alloy powder is 60-150 μm, the primary oxygen enrichment gradually decreases with the increase of particle size. The primary oxygen enrichment increases rapidly when the particle size of the powder is less than 60 μm, while the primary oxygen increase hardly changes when the particle size of the powder is larger than 150 μm.
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Received: 24 January 2018
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2019, Vol. 29 
